When Did Vladimir Zworykin Invent The Television?
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Answered on 2013-01-23 20:38:00
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While electromechanical techniques were developed prior to World War II, most notably by Charles Francis Jenkins and John Logie Baird, all-electronic television systems relied on the inventions of Philo Taylor Farnsworth, Vladimir Zworykin and others to produce a system suitable for mass distribution of television programming. Commercial broadcast programming, following years of experimental broadcasts seen only in a few specially-equipped homes, occurred in both the United States and the United Kingdom before World War II.|
Inventions are not copyrighted, they are patented. If a patent was filed for televisions, they have expired by now.
Television came into being based on the inventions and discoveries of many men and scientists.|
EFW (Ernest Frederik Werner) Alexanderson (American)
Belin and Barthelemy (French)
Hollis Semple Baird (American)
John Logie Baird (Scottish)
Philo T. Farnsworth (American)
Leslie E. Flory (American)
Dénes von Mihaly (Hungarian)
Charles Francis Jenkins (American)
Boris Rosing (Russian)
Ulises Armand Sanabria (American)
Kalman Tihanyi (Hungarian)
Kenjiro Takayanagi (Japanese)
Vladimir Kosma Zworykin (American)
The 'first' generation of television sets were not entirely electronic. The display (TV screen) had a small motor with a spinning disc and a neon lamp, which worked together to give a blurry reddish-orange picture about half the size of a business card! The period before 1935 is called the "Mechanical Television Era". This type of television is not compatible with today's fully-electronic television system.
Joseph Henry's and Michael Faraday's work with electromagnetism jumpstarts the era of electronic communication.
1862 First Still Image Transferred
Abbe Giovanna Caselli invents his Pantelegraph and becomes the first person to transmit a still image over wires.
Scientists May and Smith experiment with selenium and light, this reveals the possibilty for inventors to transform images into electronic signals.
Boston civil servant George Carey was thinking about complete television systems and in 1877 he put forward drawings for what he called a selenium camera that would allow people to see by electricity.
Eugen Goldstein coins the term "cathode rays" to describe the light emitted when an electric current was forced through a vacuum tube.
Scientists and engineers like Paiva, Figuier, and Senlecq were suggesting alternative designs for Telectroscopes.
Inventors Alexander Graham Bell and Thomas Edison theorize about telephone devices that transmit image as well as sound.
Bell's Photophone used light to transmit sound and he wanted to advance his device for image sending.
George Carey builds a rudimentary system with light-sensitive cells.
Sheldon Bidwell experiments with his Telephotography that was similiar to Bell's Photophone.
1884 18 Lines of Resolution
Paul Nipkow sends images over wires using a rotating metal disk technology calling it the electric telescope with 18 lines of resolution.
1900 And We Called It Television
At the World's Fair in Paris, the first International Congress of Electricity was held. That is where Russian Constantin Perskyi made the first known use of the word "television."
In 1921 the 14-year-old Mormon had an idea while working on his father's Idaho farm. Mowing hay in rows, Philo realized an electron beam could scan a picture in horizontal lines, reproducing the image almost instantaneously. This would prove to be a critical breakthrough in Philo Farnsworth's invention of the television in 1927.
Earlier TV devices had been based on an 1884 invention called the scanning disk, patented by Paul Nipkow. Riddled with holes, the large disk spun in front of an object while a photoelectric cell recorded changes in light. Depending on the electricity transmitted by the photoelectric cell, an array of light bulbs would glow or remain dark. Though Nipkow's mechanical system could not scan and deliver a clear, live-action image, most would-be TV inventors still hoped to perfect it.
Not Philo Farnsworth. In 1921 the 14-year-old Mormon had an idea while working on his father's Idaho farm. Mowing hay in rows, Philo realized an electron beam could scan a picture in horizontal lines, reproducing the image almost instantaneously. It would prove to be a critical breakthrough.
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The thought itself was first proposed by Marconi, Wells, and many other writers through the 19th and early 20th centuries. German John Paul Nipkow developed a rotating-disc technology to transmit pictures over a wire in 1884. Charles Francis Jenkins and John Logie Baird separately created the cathode-ray tube in both Germany and England, German scientist Karl Braun invented the cathode ray tube oscilloscope (CRT) in 1897. Vladimir Kosma Zworykin invented kinescope in 1929, about the same time Philo T. Farnsworth at the age of 13 created the original system of television transmission we use today.|